Soap and method of making same.



UNITED STATES Patented March 29, 19043 I PATENT QFFICE.

GEORGE A. SCHMIDT, OF CHICAGO, ILLINOIS.

SOAP AND METHOD OF MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 755,945, dated March29, 1904. Application filed January 15, 1904. Serial No. 189,167. (Nospecimens.)

To all whom it may concern:

Be it known that I, GEORGE A. SCH IDT, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Medicated Soaps andMethods ofPreparing Same; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to a novel medicated soap and method of makingsame, the object being to produce medicated soap in which themedicaments are kept out of intimate contact with, and therefore out ofthe sphere of, chemical action of soap or its constituent substances.

My invention relates more particularly to that class of toilet soapknown as gritty that is, soap with which powdered or granulatedpumice-stone, infusorial earth, fossil diatomes, tripoli, &c., aremixed, such combinations being better adapted to purify the furrows andrecesses of the skin than ordinary soaps.

It is well known by scientists that a number of medicaments when mixedwith soaps are subjected to chemical action which causes deteriorationand frequentlycomplete chemical transformation of such medicaments,thereby rendering them powerless to effect that for which they areintended. Furthermore, such medicaments are not brought into suchintimate contact with the skin as to penetrate sufliciently, so thatthey are'practically powerless to act. To overcome these difficu'lties,I prepare medicated soap in the following manner:

In order to maintain the effectiveness of the medicaments, I introducethe latter into the pores of the gritty material. This I effect bygranulating material-such as pumice-stone, infusorial earth,fossildiatomes, tripoli, or any other suitable porous material-and thoroughlycalcine the same by means of a high degree of heat. Ithen introduce suchpowdered granulated material into avessel, which may be sealedhermetically, wherein the same is thoroughly mixedwith solutions orextracts of antiseptics, deodorants, &c., and then subjected to theaction of air at a pressure preferably not less than fifty pounds, whichserves to force such medicaments. into the pores of saidgranules. Suchpressure is maintained, preferably, for several hours and the entiremass stirred and agitated during this time to effect the best results.Said gritty substance is then dried and is now ready to be added to thesoap. This may be done by mixing such gritty material directly with thesoap while the latter is liquid, so that each granule becomes envelopedwith a film of such soap, which by.

ual and occurs during the time that such granules are rolled over theskin, and their sharp points penetrate all fissures and pores, therebyintroducing such medicaments directly to the points at which they aremost effective and before any chemical transformation 'or dete- In fact,the chemicalrioration is effected. changes brought about when the soap,medicaments contained in the gritty material, and water meet in theminute recesses of the skin, where germs, microbes, and skin secretivesaccumulate, have the effect of detaching these to surround them withsoapy solutions, and the added mechanical action of the gritty materialforces them to the surface, whence they are easily removed. In immersingsuch gritty material entirely in the soap, so as to surround eachgranule entirely with a film thereof, a chemical transformation ordeterioration of the medicaments on the surfaces of'said gran ules iseffected, and thus a part of the benefit thereof is lost, and to thisend I prefer to prepare the soap for use in the following manner:

I coat sheets of s tifig heavy page n, cardboard, or fabric of suitablekinds on one or both sides with the soap while the latter is liquid andhot, and before said soap dries or coagulates I spread the medicatedgranules over the film of soap, so that they adhere thereto and areretained upon the sheets thereby. In this manner only a small portion ofthe area of each granule is brought into direct contact with the soap,so 'that the resulting deterioration or chemical transformation isproportionately reduced and effectiveness of the medicaments preservedin a correspondingly greater degree. The said sheets are then put up inpackages in any suitable manner'and are necessarily far more sanitary,inasmuch as each person uses a sheet, which is thrown away, so that thenext persondoes not come in contact with soap previously used by anotherand all danger of infection from this source is avoided. Soap thusprepared retains its effectiveness indefinitely and exceeds allmedicated soaps prepared in the usual manner in eifectiveness to a greatdegree.

I claim as my invention 1. The herein-described method of preparingmedicated soap which consists in mixing calcined granulated porousgritty material with liquefied medicaments, subjecting such mixtures tothe action of air under pressure in a sealed vessel, subsequently dryingsaid gritty material, and mixing same with soap in liquid state.

2. The herein-described method of preparing medicated soap whichconsists in mixing calcined granulated porous gritty material withliquefied medicaments, subjecting subh mixture to the action of airunder pressure in a sealed vessel, subsequently drying said grittymaterial and mixing same with soap in liquid state.v

3. The herein-described method of prepar- 4 ing medicated soap whichconsists in mixing calcined granulated porous gritty material withliquefied medicaments subjecting such mixture to the action of air underpressure in a sealed vessel, subsequently drying said gritty material,coating sheets of suitable material with soap in liquid form, andcovering said coated surface with said medicated gritty material beforesaid soap has coagulated.

4E. The herein-described method of prepar- 5 ing medicated soap whichconsists in mixing calcined granulated porous gritty material withliquefied medicaments, subjecting such mixture to the action of airunder pressure in asealed vessel, subsequently drying said grittymaterial, coating sheets of suitable material with soap in liquid form,and covering the coated surface with said medicated gritty materialbefore said soap has coagulated.

5. As a new article of manufacture, medirated toilet soap consisting ofsoap having GEORGE A. SCHMIDT.

Witnesses:

RUDOLPH WM. LOTZ, F. SoHLo'rFELD.

